I've been travelling for almost two months and have spent the last week exploring the beautiful country of Guatemala in Central America. I didn't know what to expect. I'd heard it was a dangerous country, and I would need to have my wits about me to stay safe. It's also a poor country.

As well as Candy Crush, nudie ladies and stalking, the internet also helps bewildering people talk authoratively about stuff they've just made up. I examine five of the internet's greatest conspiracy theories and finally attempts to answer the question that humankind has struggled with since time you can't remember.

If there is a recurrent pattern through history of believing in imminent apocalypse, does this begin to reveal more about our psychology? 'Apocalypticism' appears linked to certain religious and personality outlooks.

In El Salvador they say the country is so tiny that nothing is more than 40 minutes away. Whether it's volcano, beach or capital city, all are close - it's just the traffic around San Salvador that might hold you up